50778205404461 has 4 divisors (see below), whose sum is σ = 51227570054172. Its totient is φ = 50328840754752.

The previous prime is 50778205404359. The next prime is 50778205404503. The reversal of 50778205404461 is 16440450287705.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6186114096100 + 44592091308361 = 2487190^2 + 6677731^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778205404461 - 2²² = 50778201210157 is a prime.

It is a super-2 number, since 2×50778205404461² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778205401461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224682324686 + ... + 224682324911.

It is an arithmetic number, because the mean of its divisors is an integer number (12806892513543).

Almost surely, 2^{50778205404461} is an apocalyptic number.

It is an amenable number.

50778205404461 is a deficient number, since it is larger than the sum of its proper divisors (449364649711).

50778205404461 is a wasteful number, since it uses less digits than its factorization.

50778205404461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449364649710.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 50778205404461 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred four thousand, four hundred sixty-one".